15 or 20 amp?

Just a few 2002 NEC Code questions on new residential construction: 1. What single electrical devices are required to have its own dedicated circuit (e.g., refrigerator, stove, etc.). 2. What single electrical devices do you recommend having its own dedicated circuit, from a practicality point of view? 3. Please point me to the relevant sections of the NEC code for the above; I cannot find them!! 4. Does it change the situation if the construction is for apartments, as opposed to house residence? Thanks in advance, Ed

HELP! I'm taking out an old light fixture in the bathroom and installing a new one. No big deal right...wrong! After taking out the old fixture, I noticed that there was a wire with a power outlet attached and it was attached to a red wire in the electrical housing. I'm assuming this was to create continuous power to that outlet. In putting in the new light, I connected the black to the black and white to white. I put the fuse back in it's spot and the light goes on, but the switch is in the off position! If I turn the switch to on, the fuse blows. I've tried reversing the white and black wires from the housing to the light but to no avail. What do I need to do?! Thank you and I'm sorry that I'm a moron.